Winnebago is hosting online introduction events for the 2021 Revel and Solis models this Friday, July 24th.
The Revel event appears to be just the formal release of the lithium battery, 2nd alternator, onboard water storage, and reconfigured galley layout previewed earlier at the March dealer conference in San Diego. Production 2021 Revel units are scheduled to arrive at dealers beginning next week. This event will be hosted by the Famagogo Revel users at 10am CDT Friday:
https://www.facebook.com/events/1208875996133120/
Solis on the other hand appears to be either a new model or reconfiguration of the current layout to accommodate inside bike and gear storage. That event is hosted by FitRV at 2pm CDT Friday:
https://www.facebook.com/events/289413435614368/